If you've seen any big blockbuster movie lately, you know just how impressive computer effects can be.
These days the only limit to what you can put on screen is your imagination.
But to make those colorful CGI characters come to life, you still need actors to take their place.
Before Hollywood's computer wizards do their magic, the typical movie set looks pretty strange - and these hilarious photos prove it.
1. Good boy 676r5r

2. Are you telling me they don't use real flying books? 736x39

3. Close enough 4y2a5v

4. Teenage Mutant Ninja Turtles and average, adult actors in suits 3s3a2n

5. Nice shoulder pads 185d2g

6. They had to digitally remove some of his cheeriness 4i1r1p

7. Feeling blue? 1f3g6w

8. Don't let this role give you a big head, Lupita 3n2h33

9. Acting still takes a lot of imagination 4x1y

10. Suddenly, they're not so scary k4b2a


11. Got your nose! 6p5v6w

12. Did you two forget your suits? 6z184r

13. It's a bird, it's a plane, it's not that impressive up close g186r

14. He gets really into character 3yp7


15. Are you telling me they didn't hire a real dragon? 466z6d

16. Can you spot the difference? ol5p

17. Smile, you're on camera! 4b6x3s

18. Another job lost to a robot 213p6t
19. Not so beastly behind the scenes 2u6q1r


20. It's not easy being green 4c4u15


21. Something's fishy about these guys.... 2s4q2d


22. Curious and curio 3p366i


23. He toughened up a bit 6u5y1i

24. Not as cuddly as he seems 49o56

25. Tapping into her wild side 181k6n

26. Some assembly required 185j38

27. Four years in acting school, all for this... 114s4p


For more glimpses behind the scenes in Hollywood, check out movies before the special effects are added.
And see 10 actors who totally transformed to play real people.